P-MAC
packet media access controller
PAD
packet assembler-disassembler
PCB
printed circuit board
PDS
premises distribution system
Personal Communications
Personal communications provides at least one human operator with direct terminal access and real time or near real time interactive communications with a remote human opera tor or an information system resource. Personal communications can refer to a broad range of services, systems and equipment, e.g., facsimile machines, landline telephones, cellular tele phone systems and emerging personal communication system (PCS) adjuncts, and a variety of radio systems including pagers, hand-held remote data entry terminals, and autonomous citizen-band- like radio systems.
PHY
physical-layer protocol
PMD
physical-layer media-dependent
Point-of-presence (POP)
A POP is a physical location within a LATA that an IXC establishes for the purpose of gaining access to BOC/LEC networks within the LATA using LEC provided access services. An IXC may have more than one POP within a LATA and the POP may support public and private, switched and non switched services.